D.67 Low
Your boiler is simply taking a short, programmed break between heating cycles to protect its internal parts and operate more efficiently.
Technical description: Remaining burner anti-cycling time
Typical repair cost: £0 (including labour)
DIY fix possible
Wait for 5 to 15 minutes for the countdown to finishEnsure your room thermostat is turned up high enough to call for heatCheck that your radiator valves are open to allow heat to dissipate
Protect yourself from future repair bills
A boiler cover plan would cover faults like D.67 — no call-out fees, no surprises.
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